Using operator pairs (=+, =-, or =!) that look like reversed single operators (+=,
-= or !=) is confusing. They compile and run but do not produce the same result as their mirrored counterpart.
var target, num = -5, 3
target =- num // Noncompliant: target = -3. Is that the expected behavior?
target =+ num // Noncompliant: target = 3
This rule raises an issue when =+, =-, or =! are used without any space between the operators and when there
is at least one whitespace after.
Replace the operators with a single one if that is the intention
var target, num = -5, 3
target -= num // target = -8
Or fix the spacing to avoid confusion
var target, num = -5, 3
target = -num // target = -3
